turck BL20 Series - Page 310

Analog Output Modules
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308
Diagnostics
This module has the following diagnostic data per channel:
Byte B7 B6 B5 B4 B3 B2 B1 B0
Channel 1
0 hard-
ware
error
Invalid
parame-
ter
HART
comm.
error
HART
status
error
Value
below
lower
limit
Invalid
value
Wire
break
Value
above
upper
limit
1
-
Channel 2
2 hard-
ware
error
Invalid
parame-
ter
HART
comm.
error
HART
status
error
Value
below
lower
limit
Invalid
value
Wire
break
Value
above
upper
limit
3
-
Diagnostics Meaning
Value above upper limit The allowed output range limits are exceeded.
 Limit values according to parameterization, from s. p. 314.
Wire break Displays an open circuit in the signal line.
The permissible output value limits are exceeded.
Invalid value The output value exceeds the values which the module is able to interpret.
Value below
Lower limit
The allowed output range limits are exceeded.
 Limit values according to parameterization, from s. p. 314.
The permissible output value limits are exceeded.
HART status error The connected HART-device set a bit in the HART status-information
(”status - polling”).
HART
communication error
The channel does not allow communication with the HART-device.
Invalid parameter Possible causes:
Setting of a reserved parameter bit
The substitute value which is set is not within the measurement value range.
Module behavior:
Output value/substitute value = 0 mA
The return value of the HART-variable in the process data is 0×0000 0000.
Hardware error Shows common errors of the module hardware. The return analog value in
case of an error is ”0”.
NOTE
If an error message from the sensor occurs, the HART-status is set to ”1”.